Terry we had the same issue at MTTD, we had a really nice router hooked up but teams would drop in and out. Luckily 971 had a spare WRT610N Router with them. Their router worked for the rest of practice matches, also worked for all of saturday (quals/elims).
They are still available here.
I can't recommend another router as many have failed for us. Maybe Greg from NI can?
-RC